* {
  padding: 0;
  margin: 0;
}

a {
  text-decoration: none;
}

li {
  list-style: none;
}

/* -------------------------------------------------------头部----------------------------------------------------- */
.header {
  width: 100%;
  height: 105px;
  /* background: skyblue; */
}

/* --------------------------------------------------------------顶部------------------------------------------- */
.top {
  height: 70px;
}

.nav-top {
  height: 70px;
  padding-left: 250px;
  padding-right: 150px;
  background: rgba(0, 0, 0, .8);
  display: flex;
}

/* logon */
.logon {
  display: flex;
  align-items: center;
}

.logon img {
  height: 30px;
  width: 30px;
  margin-right: 5px;
  fill: #fff;
}

.top-intro {
  display: flex;
  align-items: center;
  margin-left: 20px;
  color: #fff;
}

.top-intro:hover {
  cursor: pointer;
  background-color: rgba(0, 0, 0, 1);
}

/* 搜索 */
.search {
  width: 200px;
  height: 30px;
  border-radius: 20px;
  background-color: #fff;
  position: relative;
  top: 20px;
  margin-left: 20px;
  display: flex;
  align-items: center;
}

.search img {
  height: 20px;
  width: 20px;
  margin-left: 5px;
}

.search input {
  border: none;
  color: #9b9b9b;
}

.anthor {
  color: #fff;
  width: 100px;
  height: 30px;
  border-radius: 20px;
  position: relative;
  top: 20px;
  margin-left: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(225, 225, 225, .5);
  font-size: 12px;
}

.anthor:hover {
  cursor: pointer;
  border: 1px solid #fff;
}

.down {
  margin-left: 15px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: rgba(225, 225, 225, .5);
}

.down:hover {
  list-style: armenian;
}

.channel {
  height: 35px;
  background: red;
}

/* --------------------------------------内容----------------------------------------------------------- */
.nav-body {
  height: 1000px;
  width: 100%;
}

/* ------------------------------------------------------------轮播图-------------------------------------------- */
.banner {
  height: 285px;
  background: rgb(225, 225, 225);
}

/* ---------------------------------------------------------主体内容------------------------------------------------------ */
.main {
  height: 500px;
  padding-left: 310px;
  padding-right: 300px;
  display: flex;
}

/* 左侧 */
.nav-left {
  width: 250px;
  height: 700px;
  position: relative;
  right: 0;
  background: skyblue;
}

.feet {
  width: 500px;
  padding-right: 20px;
}

/* 主体头部 */
.feet-top {
  height: 35px;
  background: rgb(0, 0, 0);
}

/* 内容 */

.card-1 {
  position: relative;
  top: 0px;
  display: inline-grid;
  grid-template-columns: repeat(4, 2fr);
}

.card-1 li {
  width: 100px;
  height: 200px;
  background: skyblue;
  margin-left: 20px;
}

.card-1 li:nth-child(n+5) {
  margin-top: 20px;
}

.feet-1 {
  position: relative;
  margin-top: 10px;
}

.feet-2 {
  position: relative;
  padding-top: 50px;
}

.card-2 {
  height: 200px;
  display: inline-grid;
  grid-template-columns: repeat(5, 100px);
}

.card-2 li {
  width: 80px;
  height: 150px;
  background: pink;
}

.feet-3 {
  position: relative;
}

.card-3 {
  width: 500px;
  height: 200px;
  display: inline-grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.card-3 li {
  width: 160px;
  height: 50px;
  background: pink;
}